hi sarah, im not to sure on the menu of the 100sl , but i will give it a go, go to menu / then (installation) then user installation) if it ask for a pin number put in 0000 press ok" now on the list that comes up , look for (symbol rate) tellywest should read 6.952 ,and if your were on ntl , it would read 6.887, so use your remote to change it back to 6.952, press ok " to save, exit back out, if you did this right, you should have a channell list , even if there are showing scrambled or not ...
mark.
June 2010